Finding the Fourth Proportional to 328,554.82, 492,756.90 and 91,921.42

Step by Step Solution

1. Step 1: Write the proportion equation
   328,554.82 : 492,756.90 = 91,921.42 : x
2. Step 2: Convert to fraction form
   328,554.82/492,756.90 = 91,921.42/x
3. Step 3: Cross multiply
   328,554.82x = 492,756.90 × 91,921.42
4. Step 4: Simplify right side
   328,554.82x = 45,294,913,962.80
5. Step 5: Solve for x
   x = 45,294,913,962.80/328,554.82
6. Step 6: Final answer
   x = 137,861.05